- They both have brown eyes.
- They are both sub-vocalists.
- They both have a younger brother.
- They are both members of Y-Teen.
- Cheng Xiao has black hair but Yeoreum has grey-purple ombre hair.
- Cheng Xiao can play guzheng but Yeoreum can play the piano, pipe and janggu.
- Cheng Xiao has a younger sister but Yeoreum has a younger brother.
- They are both members of Cosmic Girls.
- They share a room with Xuan Yi and Mei Qi.
- If Cheng Xiao was a boy, she would date Yeoreum.
- ↑ WJSN came back with "Save Me, Save You" Retrieved November 1, 2018.
- ↑ WJSN's Private Life on Heyo TV Ep. 1
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